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Kinetic study and scaleup of the oxidation of nanofiltration retentates by O3 / Steven Van Geluwe in Industrial & engineering chemistry research, Vol. 51 N° 20 (Mai 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 20 (Mai 2012) . - pp. 7056-7066 Titre : Kinetic study and scaleup of the oxidation of nanofiltration retentates by O3 Type de document : texte imprimé Auteurs : Steven Van Geluwe, Auteur ; Jan Degreve, Auteur ; Chris Vinckier, Auteur Année de publication : 2012 Article en page(s) : pp. 7056-7066 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Membrane  separation  Nanofiltration  Oxidation  Kinetics Résumé : This paper reports on the upscaling of an O3 reactor for the oxidation of natural organic matter. Natural organic matter is responsible for fouling of nanofiltration membranes used for drinking water production. The proposed concept is to feed the retentate stream of a nanofiltration module (400 m3 h―1) to an O3 reactor (bubble column) and subsequently recycle it to a second nanofiltration module. The O3 oxidation of the retentate stream in the bubble column is analyzed in terms of the two-film theory with mass transfer and chemical reaction. The kinetic regime of the ozonation process, i.e., the chemical reaction rate relative to the mass-transfer rate, is determined using data from laboratory-scale experiments. This information is used for the calculation of the reactor volume and the required O3 dose on an industrial scale. An economic assessment of the integrated nanofiltration―O3 oxidation process also is given. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25925047 [article] Kinetic study and scaleup of the oxidation of nanofiltration retentates by O3 [texte imprimé] / Steven Van Geluwe, Auteur ; Jan Degreve, Auteur ; Chris Vinckier, Auteur . - 2012 . - pp. 7056-7066. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 20 (Mai 2012) . - pp. 7056-7066 Mots-clés : Membrane  separation  Nanofiltration  Oxidation  Kinetics Résumé : This paper reports on the upscaling of an O3 reactor for the oxidation of natural organic matter. Natural organic matter is responsible for fouling of nanofiltration membranes used for drinking water production. The proposed concept is to feed the retentate stream of a nanofiltration module (400 m3 h―1) to an O3 reactor (bubble column) and subsequently recycle it to a second nanofiltration module. The O3 oxidation of the retentate stream in the bubble column is analyzed in terms of the two-film theory with mass transfer and chemical reaction. The kinetic regime of the ozonation process, i.e., the chemical reaction rate relative to the mass-transfer rate, is determined using data from laboratory-scale experiments. This information is used for the calculation of the reactor volume and the required O3 dose on an industrial scale. An economic assessment of the integrated nanofiltration―O3 oxidation process also is given. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25925047